Emergency Medicine Doctors in California
Data updated monthly · Last refresh October 2026
7,777 Emergency Medicine providers practice in California, including 234 (3%) offering telehealth. The largest concentration is in Los Angeles. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
7,777providers
234telehealth
Los Angelestop city
Emergency Medicine by city in California
Choose a city to see providers there.
Emergency Medicine providers in California
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Nicolas Fesser, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Noushafarin Taleghani, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ogechukwu Offorjebe, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Patrick Burns, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Patrick Lanter, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Peter Acker, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Peter D'souza, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Philip BussStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-9215 Dr. Phillip Harter, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Phillips Perera, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 725-9445 Dr. Pierre-carole Tchouapi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Pranjal GuptaStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Prasanthi Govindarajan, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rachel Berkowitz, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rana Kabeer, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rebecca Smith-coggins, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rebecca Walker, MDStanford, CA · $41 in drug and device payments (2025) ·
(650) 723-4000 Dr. Rodney Altman, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ronald Masson, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-9215 Dr. Ross Fleischman, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Rwo-wen Huang, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-0063 Dr. Ryan Ribeira, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sachie Oshima, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sally Graglia, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sally Mahmoud, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sam Shen, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Samuel Yang, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sarah Williams, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sara Krzyzaniak, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sean Dowling, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Shashank Ravi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sindhya Rajeev, M.D., MPHStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Siobhan Smith, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 732-4000 Dr. Swaminatha Mahadevan, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Sybil Zachariah, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-6269 Dr. Teng LuStanford, CA · No drug or device payments recorded (2025) ·
(443) 519-6489 Dr. Terry Fotre, DOStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Timothy Batchelor, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Ting Xu Tan, M.D.Stanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Vance Vanier, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Viveta Lobo, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Vytas Karalius, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Wei Hao, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Wendy Thanassi, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. William Dixon, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. William Mulkerin, MDStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Youyou Duanmu, MD, MPHStanford, CA · No drug or device payments recorded (2025) ·
(650) 723-4000 Dr. Alan Genicoff, MDStockton, CA · No drug or device payments recorded (2025) ·
(209) 944-5550 Dr. Alissa Shepard, DOStockton, CA · No drug or device payments recorded (2025) ·
(209) 943-2000 Dr. Anatoliy Goltser, MDStockton, CA · No drug or device payments recorded (2025) ·
(209) 467-6444 Common questions
How many Emergency Medicine providers are in California?There are 7,777 Emergency Medicine providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Emergency Medicine providers in California offer telehealth?Yes. 234 of the 7,777 Emergency Medicine providers in California (about 3%) report offering telehealth services in CMS data.
Which cities in California have the most Emergency Medicine providers?Los Angeles (630), San Diego (496), Sacramento (371) have the highest concentration of Emergency Medicine providers in California.
How many Emergency Medicine providers in California received drug or device company payments?1,103 of 7,777 Emergency Medicine providers in California (14%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Emergency Medicine Doctors in California work in independent practices or large health systems?Among 4,164 Emergency Medicine Doctors in California enrolled in Medicare, 7% bill through a solo or small practice with fewer than 10 clinicians, 27% through a mid-size group of 10 to 99, and 66% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Emergency Medicine Doctors in California work at?According to CMS facility affiliation records, the California hospitals where the most Emergency Medicine Doctors hold privileges are Uci Health-Orange in Orange; Stanford Health Care in Stanford; Kaiser Foundation Hospital - Oakland/Richmond in Oakland.
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